Lavatory faucet set base



FIG. 1 is a perspective view of a lavatory faucet set base, showing our new design;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a rear elevational view, the front elevational view being a mirror image thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lavatory faucet set base, as shown and described. 